...
The default type for standard particle emitter) is → “Liquid”. Change it under
Emitter > Node Params > Particles > Type > Elastics
...
Then enter the following values in the “General” tab:
...
MIN substeps > 333
...
MAX substeps > 333
...
The change to fixed substeps will increase the simulation's stability drastically. Furthermore it is now possible to use higher emitter “Resolution” settings (= more particles). It will also help to keep simulation times moderate, but you should be aware that RealFlow has to perform very complex calculations and they simply take time. The more particles, the more likely it is that you will see instabilities.
...